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Kubernetes an orchestration framework Launch kubernetes cluster in Different ways Debugging your kubernetes cluster Certificates renewal of kubernetes cluster Deploying application on Kubernetes cluster api versions to use in manifest file RBACs in Kubernetes Health check of containers in Kubernetes Rancher a cluster management platform Understanding ISTIO as a service mesh
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Things to know in Apache How to Configure Apache-httpd Server Setup httpd as os-service on OL8 SiteMinder and its Integration with WebServer Apache SSL Installation Instructions NO_RESOURCES Errors in APACHE with WLS
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OTHER
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16 March 2020

RANCHER - A cluster management platform

Rancher is a 100% free and open-source software platform that enables the enterprise to run containers in production. It is a complete software stack for teams adopting containers. It has the capability that it can import your k8s-cluster no matter from where it comes from. It is a single cluster-multi tenancy tool. It addresses the operational and security challenges of managing multiple k8s-clusters across any infrastructure while providing DevOps teams with integrated tools for running containerized workloads.
Resources like Istio, pipeline, Prometheus, Grafana are integrated with Rancher.

 
 Getting start with Rancher using Docker
 $ docker pull rancher/rancher
 $ docker run -d --restart=unless-stopped -p 61090:80 -p 61091:443 \
  -v /software/bea/rancher:/var/lib/rancher --privileged rancher/rancher:latest

access the Rancher console by hitting - https:localhost:61091/ 

follow the welcome instructions on the screen and it will land up to your Global screen of clusters.
once your setup is complete, start adding any of your k8s-cluster.

in this example, I am going to add my vanilla k8s-cluster which is running on-prem.

navigate to Add-cluster > other cluster > give a name to your cluster 
rancher will generate commands for you to import your cluster, which you need to run in your cluster CLI as below

which will deploy required resources

$ kubectl create clusterrolebinding cluster-admin-binding \
  --clusterrole cluster-admin --user [USER_ACCOUNT]
$ kubectl apply -f https://localhost:61091/v3/import/s8dkk7demo6fp2f6qffhmlkr.yaml

# if you get a certificate related error try running on insecure channel
$ curl --insecure -sfL https://localhost:61091/v3/import/s8dkk7demo6fp2f6qffhmlkr.yaml | \
  kubectl apply -f 

# following resources will gets created
 clusterrole.rbac.authorization.k8s.io/proxy-clusterrole-kubeapiserver created
 clusterrolebinding.rbac.authorization.k8s.io/proxy-role-binding-kubernetes-master created
 namespace/cattle-system created
 serviceaccount/cattle created
 clusterrolebinding.rbac.authorization.k8s.io/cattle-admin-binding created
 secret/cattle-credentials-4c43de3 created
 clusterrole.rbac.authorization.k8s.io/cattle-admin created
 deployment.apps/cattle-cluster-agent created


you will be able to see your cluster added into rancher now
keep reading.. lot more to come...

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